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llvm-mirror/test/CodeGen/X86/2009-11-04-SubregCoalescingBug.ll
Evan Cheng 801415706c RangeIsDefinedByCopyFromReg() should check for subreg_to_reg, insert_subreg,
and extract_subreg as a "copy" that defines a valno.
Also fixes a typo. These two issues prevent a simple subreg coalescing from
happening before.

llvm-svn: 86022
2009-11-04 08:33:14 +00:00

16 lines
429 B
LLVM

; RUN: llc < %s -mtriple=x86_64-apple-darwin11 | FileCheck %s
; rdar://7362871
define void @bar(i32 %b, i32 %a) nounwind optsize ssp {
entry:
; CHECK: leal 15(%rsi), %edi
; CHECK-NOT: movl
; CHECK: call _foo
%0 = add i32 %a, 15 ; <i32> [#uses=1]
%1 = zext i32 %0 to i64 ; <i64> [#uses=1]
tail call void @foo(i64 %1) nounwind
ret void
}
declare void @foo(i64)